@article{JETPL.107.94, title = {}, author = {Tolokonnikov, S. V. and , and Lutostansky, Yu. S. and , }, journal = {JETP Lett.}, volume = {107}, issue = {2}, pages = {86}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X18020030}, note = {[Pisma v ZhETF 107, 94 (2018)]} }